Justin Bieber wet his whistle, solo, in an unexpected hot spot ... a North Hollywood gay bar.
We're told Justin walked into Club Cobra on Saturday at around 9 PM with only one bodyguard and ordered a beer.
We spoke to the club's bouncer, who got a pic with JB ... he tells us he doesn't think Justin knew it was a gay bar. No one was there, except for the bartender and staff.
The bar -- which has events like Wayback Wednesdays and Forbidden Fridayz -- doesn't get hoppin' till 10:30ish on weekends ... the dancers come on at 11. Justin left around 10 PM, so it was likely a 1 OAK pre-game pit stop.
Justin Drew Bieber ( /ˈbiːbər/ BEE-bər, born March 1, 1994) is a Canadian singer-songwriter, musician, producer, entrepreneur, investor, and actor. Bieber was discovered in 2008 by American talent manager Scooter Braun, who came across Bieber's videos on YouTube and later became his manager. Braun arranged for him to meet with entertainer Usher Raymond in Atlanta, Georgia, and Bieber was signed to Raymond Braun Media Group (RBMG), and then to an Island Records recording contract offered by record executive L.A. Reid. His debut extended play, the seven-track My World, was released in November 2009, and was certified platinum in the United States. He became the first artist to have seven songs from a debut record to chart on the Billboard Hot 100. Bieber's first full-length studio album My World 2.0, was released in March 2010. It debuted at or near number-one in several countries and was certified platinum in the United States. It was preceded by the worldwide top-ten single "Baby". He followed up the release of his debut album with his first headlining tour, the My World Tour, the remix albums My Worlds Acoustic and Never Say Never – The Remixes, and the 3D biopic-concert film